Dell PowerEdge R720 t Руководство - Страница 5

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Dell PowerEdge R720 t Руководство
Item
ONFI Backup Flash
SDRAM
H310, H310M PERCs
NVSRAM
FRU
1-Wire EEPROM
SBR
Flash
PCIe SSD Extension Card
Switch Configuration
EEPROM
IDSDM
SPI Flash
MCU
Item
Planer
PCH Internal CMOS RAM
BIOS SPI Flash
iDRAC SPI Flash
BMC EMMC
CPU Vcore and VSA
Regulators
System CPLD RAM
Type (e.g. Flash PROM, EEPROM)
ONFI Backup Flash
SDRAM
NVSRAM
FRU
1-Wire EEPROM
SBR
Flash
SPI Flash EEPROM
SPI Flash
Embedded Flash
Purpose? (e.g. boot code)
Real-time clock and BIOS
configuration settings
Boot code, system configuration
information, UEFI environment, Flash
descriptor, ME
iDRAC Uboot (bootloader), server
management persistent store (i.e.
IDRAC MAC Address, iDRAC boot
variables), lifecycle log cache, virtual
planar FRU and EPPID, rac log,
system event log, JobStore, iDRAC
Secure boot code,
Operational iDRAC FW, Lifecycle
Controller (LC) USC partition, LC
service diags, LC OS drivers, USC
firmware
Operational parameters
Not utilized
Can user programs or operating
system write data to it during normal
operation?
No
No
No
No
No
No
No
No (requires specialized SW)
No
FW can be updated via Linux and DOS
How is data input to this memory?
BIOS
SPI interface via iDRAC
SPI interface via iDRAC
NAND Flash interface via iDRAC
Once values are loaded into register
space a command writes to NVMEM.
Not utilized